I'm going to upgrade my cyclocross bike with new 1x11 dedicated components. Currently bike has old 105 5700 groupset and cantilever brakes. Those mechanical brakes are the main problem - I don't want to go on hydraulic discs because I've got quite new and good wheels for rim brakes and not compatible frameset.
I see 2 solutions, but non of them seems to be ideal;
1. Buy GRX 1x11 group and mix them with road ultegra shifters. Is it possible to use front 2x11 shifter for 1x11 drive? (I don't see any problem with using only brake lever, and have shifting unnecessary)
Do you think ultegra shifters are ok for off-road? Maybye something from other shimano group is better? All I know is that GRX has special design which should give more comfort
2. Buy SRAM Apex 1x11 for mechanical brakes - seems to be easy solution but I have already road bike with ultegra and I'm not very convinced that using different shifting in 2 bikes is a good idea, especially when I participate in races both on road and CX.
I'll be very grateful for any ideas/suggestions